Stone-polishing machine



Oct. 7, 1930.l

J. lNwALD ET Al. 1,777,726

STONE POLISHING MACHINE Filed Dec'. 29. 192e 5 Sheets-Sheet l Oct. 7, 1930. 1, lNwALD ET ,M 1,777,726

STONE POLI SHING MACHINE Filed Dec. 29. 1926 Sheets-Sheet 2 nvem-cou Oct. 7, 1930. J. INWALD ET A1.

' STONE PoLIsHlNG MACHINE Filed Deo. 29, 192e 3 sheets-sneer 3 Imm Patented Oct. 7, 1930 NITED QATES JosnPHiNWALD Ann isinonn rilisKEL,` or BROOKLYN, NEW Yoan, Assieirons '.ios."

PATENT erp-ICE I i YIIASKEL & sons, INC., a eonPoRAfrIoNoFwNEw YORK f STONELPOLISHING iviiieniivn 4 Application inea December 29, ieee. seriai in. 157,632.

The improvements relate to machines for rubbing, grinding and polishing stone `and y the like, and-their objects are primarily to infsame, as will appear more fully by the fol-` i are illustrated in the accompanying draw-A crease the`4 strength eicency" and simpliity` and render more eEective the operation ofthe lowingdescription. The said improvements ings, referred to herein..

the said drawingsFig. lis a plan ot a grinding, surfacing or polishing `machine em-` hodying the improvements;

"Fig 2 Vis a si'deielevationlot the saine and. Fig.` 31s an end` elevation of the same withV some of the parts shown invertical section.

rllhe machine is mounted on a floor or base l, preferably ot concrete and having a smooth suriaceyandis so constructedand arranged that a. `clearlioor `space without obstruction to washing is'providedf The uprights 2 are embedded in 'tlie"base, andconsistoi Yrigid H beams,vsix in number, forming thecorner 'posts and intermediate `posts of the machine.

On one ot theseposts is mounted a motor. 3

connected byl suitable gears ,3' with raising u and lowering shafts 5 and 6, and by means oi h site side,

i provided `vvith'a head 8, the end ot the screw y 29 on the posts 2- other gears 4:" to a similar shaft on the oppoh These shafts are provided with gears connect-ing't-heni operatively with the raising andrlowering screws 7, one supported on each post by a member 2', by which the machine is raised and lowered, 'all ot Vthe screws being operated simultaneously. The screws 7 are connected at their lower ends with the trame oi the machine 9 by having their lower ends passed therethrough and passing through the trame being of reduced diameter, so that the screw canhave no vertical `movement withv respect to` the frame. The said trame has a sliding block 10 with grooves engaged by V sh aped guides or slides .Che blocksrlO are secured to the channels 11 forming the outer horizontal frame and connected by plates l1 to the inner horizontal H beams 10 forming the inner part oit the trame.

The longitudinal movement. oi the surtad ing or polishing machine is provided for by the carriage track 13 mounted on the frame,

to take up wear,*and the` grooved casting 14- sliding thereon.` Alfgear" 15 in afcasef 16 adapted to be packed withgrease is `connected by this shaft '16 with a pinion 17 inmesli withA the `rack 18 fixed to the frame,`and this gea-r is driven by meansot a shaft 19 operatedby a motor 22 through any suitable cond necting gears. i The shaft is `cbnnected with the motor through suitable gearsin` a gear grease case 16 and a shaft with couplin 21. f

In this manner provision ist made tor the longitud-inalnmovement ofthe polishing or suriaciiigmachine over the face of theibed on whichthe stone to vbe"surfaced is support-` edh The said `stone is supported on' a ear-c riage comprising the tabled() mounted` on flanged "wheels 41, 'which runs upon tracks 42 Vembedded in `the concreteiioorp.f` "W'Ihis permits the work to beremoved from the vsui'- facing `machine,and Vreplaced by other Work carriedbythe same or another truck.l i Duringi-the `polishing "operation, however, the

`Vployed desired, but such means `'has not been shown because it isnot alWa sessen"`` 7 tial in the present apparatus, and because s'ucli means is well known in the art.` g In the present machine therubbing diskis made substantially thel full 'width ofthe bed, so as to cover it laterally`,j`thereby'eliminating tliefnecessity `for crosswise travel in ordinary use; This is made possible by the strong and ldurable` constructionof the entire machine,

comprising the six posts or uprightsfof H-i beam construction, the horizontal frame connecting the uprights composed of combined ll`-beams and channels connected by plates `(i, 11, 12) and a relatively high power mo-` torand more substantial power transmitting'V `andrubbing disk `rotating means,` In this manner it ispossible to usea disk lOtfeet` instead; of six` `teet in diameter, andby ai'-,4 rangingthe filler oi grinding or; polishing." material so as to compensate; properly tor the increased speed `towzarrd thefperipliery, in ,y

Well known manner, to grind or polish the entire surface of the stone or other work without moving the disk laterally to reach its side edges. Y

Means for rotating the rubbing disk carrying the polishing or grinding material are provided in the motor 23 mounted on the laterally slidable plate 23 on the traveling frame composed of longitudinal members 29 and cross members 29, upon which the motor 22 is also mounted, the coupled motor shaft" 24, bevel pinion 25 on the end thereof meshing with bevel gear 26 on shaft 27, and through pinion 27 on said shaft with the large gear 28 on shaft 30.' The shaft or spindle 30 car ies the hub 33 secured to the polishing wheel or rubb-ing disk frame 32fby means of threaded studs 34V on the latter extending through the hub and secured by means oi' nuts, and to the underside of this wheel or frame lillers 01"' polishing or grinding material 35, of any desired form, are secured.

The shaft 30 has central bore 30 extending therethrough, and at its top a connection 3l for a swivel coupling for a flexible liquid pipe is provided. 'The liquid channel is open at the bottom, and a large channel 36 extending through the polishing disk forms a continuation of the liquid conduit so that liquid ior wetting the surface of the stone and the polishing material will pass therethrough and be distributed over the surfaces of these two elements radially throughout the entire rubbing surface. In this manner liquid is supplied to and distributed throughout the rubbing surfaces in the desired amount-being controlled in any suitable manner-and without waste, and without causing splashing on the other parts of the machine. The springs 30 give the polishing disk a resilient or yielding Contact with the work and gauge pressure.

What we claim is:

l. In a machine of the character described, uprights consisting of posts of substantially H-beam cross section in combination with a rigid, vertically movable horizontal frame suspended thereon, said Jframe comprising flanged members extending between the flanges of said uprights, a longitudinally movable frame on said horizontal frame, a motor carried by the latter and .a polishing wheel having a diameter substantially the width of the enclosure defined by said posts, suspended from said second named frame and operatively connected with said motor.

2. In a machine of the character described, uprights consisting of posts in combination with a rigid, vertically movable horizontal frame adjustably suspended thereon, said frame comprising a channel beam forming a housing for traction elements, a track member and a rack member mounted within said channel beam, a longitudinally movable frame on said horizontal Jframe, having a pinion arranged in mesh with said rack and a grooved casting disposed within said channel beam .and slidable on said track, a motor mounted on said second named frame, for actuating said pinion, a second motor carried by said second named frame and a polishing wheel suspended therefrom and operatively connected-with said second motor.

3. A polishing machine comprising fixed uprights, a vertically movable horizontal frame mounted thereon, said frame comprising a beam forming a housing, a track member and a rack member mounted within said beam, a longitudinally movable frame on said horizontal frame, having a pinion meslio ing with said rack and a member disposed within said beam and slidably engaging said track, means mounted on said second frame for actuating said pinion, a polishing device suspended from said second frame and means 8f on said :trame for actuating said device.

et. A polishing machine comprising fixed H-shaped uprights, each having oppositelyv extending sets of parallel flanges, a vertical screw threaded member mounted between the flanges of one set of flanges on each upright, a vertically movable horizontal frame having extensions extending between and guided by the iianges of the othersetof flanges on said uprights, and extensions having screw threaded connections with said screw threaded members, a longitudinally movable carriage mounted on-said horizontal frame, means for actuating said screw threaded members for causing vertical movement of said horizontal 7 .3 frame, means for longitudinally moving said i carriage, a polishing wheel suspended from said carriage, and means on said last carriage for rotating said wheel.

Witness our hands this 21st day of December, at New York, in the county of New York and State of New York.

JOSEPH INWALD. ISIDORE HASKEL. 

